B. The sum of the protons and neutrons.
Answer:
Join your local community forum. By joining or attending your local community forum, you can:
Volunteer. Volunteers give their time freely to support their communities. ...
Support a local voluntary organisation. ...
Community hubs. ...
Patient participation groups. ...
Take part in a consultation. ...
How we get involved with communities.
Explanation:
The answer is A Reflector which is a type of material that waves use to bounce off of
